diff --git a/workflow/sepa-export-3.0.1.bpmn b/workflow/sepa-export-3.0.1.bpmn
index 1db3ce6..1955fe5 100644
--- a/workflow/sepa-export-3.0.1.bpmn
+++ b/workflow/sepa-export-3.0.1.bpmn
@@ -140,6 +140,16 @@ Please check the process:
         <imixs:item name="keyupdateacl" type="xs:boolean">
           <imixs:value>false</imixs:value>
         </imixs:item>
+        <imixs:item name="txtbusinessrule" type="CDATA">
+          <imixs:value><![CDATA[var result={};
+ var refField="txtcomment"; 
+result.isValid=true;
+
+ if (  ( workitem.get(refField) == null || ''==workitem.get(refField)[0])   ) {
+     result.isValid=false;
+     result.errorMessage='Bitte geben Sie einen Kommentar ein.';
+  }]]></imixs:value>
+        </imixs:item>
       </bpmn2:extensionElements>
       <bpmn2:documentation id="Documentation_2"><![CDATA[SEPA  von <username>$editor</username>]]></bpmn2:documentation>
       <bpmn2:incoming>SequenceFlow_13</bpmn2:incoming>